镧系-乙酰丙酮-异喹啉三元络合物超灵敏跃迁机理初探  

Stadies on the Mechanism of the Hypersensitive Transitions in the System of Ln(Ⅲ)(Pr,Nd,Sm,Eu,Dy,Ho,Er,Tm,and Yb)-Acetyleacetone(AA)-iso-Quinoline(IQx)Ternary Complexes

作　　者：白光弼 王喆明 高锦章 

出　　处：《西北师范大学学报（自然科学版）》1989年第1期37-42,共6页Journal of Northwest Normal University(Natural Science)

摘　　要：本文研究了 In^(3+)(Ln=Pr,Nd,Sm,Eu,Dy,Ho,Er,Tm 和 Yb)-AA-IQ_x 三元络合物系统中超灵敏跃迁的机理。证明随着镧系离子与 AA 及 IQ_x。形成1:4:1的三元络合物,超灵敏跃迁的振子强度增加,其增加的倍数与原子序数及镧系离子的离子半径之间的关系近似呈现“双峰效应”。通过比较电偶极跃迁与磁偶极跃迁的振子强度数值,证实超灵敏跃迁现象主要来自电偶极跃迁。本文还考察了上述络合物系统中超灵敏跃迁的振子强度与 Judd-Ofelt 参数τ_λ(λ=2、4、6)之间的关系。The mechanism of the hypersensitive transitions in the system of Ln(Ⅲ)-AA -IQ_x)has been studied systematically.We have found that,as the ternary com- plexes form,which have a composition of 1:4:1 of Ln(Ⅲ)to AA and IQ_x, the oscillator strength of the hypersnsitive transitions increases.The plots of the increase of the oscillator strength of the hypersensitive transitions vs.the atomic numbers and the ion radii of the lanthanides exhibit a“Double peak”effect. By Comparing the data of the electric dipole transitions and the magnetic dipole transitions,it is confirmed that the hypersensitivity significantly comes from the electric dipole transitions.The Judd-Ofelt Parameters(T_λ.λ=2,4,6)in above ternary complexes systemes have been calculated and the relationships of the oscil- lator strength of the hypersensitive transitions and Judd-Ofelt parameters have also been examined.

关 键 词：镧系络合物 超灵敏跃迁 

分 类 号：O614.33[理学—无机化学]